// Copyright 2025 TIER IV, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef AUTOWARE__TRAJECTORY__INTERPOLATOR__RESULT_HPP_
#define AUTOWARE__TRAJECTORY__INTERPOLATOR__RESULT_HPP_

#include <tl_expected/expected.hpp>

#include <string>

namespace autoware::experimental::trajectory::interpolator
{
struct InterpolationSuccess
{
};

struct InterpolationFailure
{
  const std::string what;
};

InterpolationFailure operator+(
  const InterpolationFailure & primary, const InterpolationFailure & nested);

using InterpolationResult = tl::expected<InterpolationSuccess, InterpolationFailure>;

}  // namespace autoware::experimental::trajectory::interpolator
#endif  // AUTOWARE__TRAJECTORY__INTERPOLATOR__RESULT_HPP_
